use master
go

Alter database FB91DWCR

MODIFY FILE ( NAME = N'RD91DWCR', NEWNAME = N'FB91DWCR', filename=N'G:\Datafiles\FB91DWCR.mdf', size=10000MB ) 
commit

select * from sys.master_files
where database_id=DB_ID('FB91DWCR')

use FB91DWCR
go
sp_helpfile